JP2501686Y2 - Suspension-upper arm mounting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a suspension upper arm mounting structure, and more particularly to a suspension upper arm mounting structure for a front body of a vehicle body.

[Conventional technology]

Conventionally, as a suspension upper arm mounting structure for a vehicle body, a structure shown in FIG. 7 is known. That is, when the suspension upper arm 70 is attached to the front body, the spring support 72 to which the suspension spring is attached is spread forward and backward, and the plate 78 and the front side member 76 are provided between the apron upper member 74 and the front side member 76. The reinforce 80 is installed and the suspension upper arm 70 is attached.

However, in this suspension upper arm mounting structure, the mounting portion of the suspension upper arm 70, which is the input point of the load from the suspension arm, is
A plate 78 and a reinforce 80 made of a flat material are connected to an apron upper member 74 and a floor side member 76, which form the skeleton of the front body.
Therefore, the supporting rigidity of the suspension upper arm 70 was not sufficient.

As a suspension upper arm mounting structure for improving this, Japanese Utility Model Laid-Open No. 63-114784 is disclosed.
That is, as shown in FIG. 8, in this structure, on the lower surface of the wheel apron 80 at the joint between the wheel apron 80 and the spring support 82, the wheel apron 80 extends along the joint and forms a closed cross-section structure with the wheel apron 80. The reinforces 84 and 86 to be formed are arranged.

However, also in this suspension upper arm mounting structure, the mounting portion of the suspension upper arm and the apron upper member 88 are connected by the spring support 82 formed of a flat plate. Therefore, the supporting rigidity of the suspension upper arm is not sufficient, and the rigidity of the entire front body is not sufficient.

[Problems to be solved by the device]

In consideration of the above facts, the present invention provides a suspension upper arm mounting structure capable of improving the support rigidity of the suspension upper arm and improving the rigidity of the entire front body. Is the purpose.

[Means for solving the problem]

The present invention is directed to an apron upper member that is disposed substantially at both upper ends of the front body of the vehicle body in the vehicle width direction, and a front saddle that is disposed substantially in the vehicle width direction inward of the upper arm. A member, a spring support coupled to the front saddle member and the apron upper member, and a reinforce coupled to the spring support and the front side member to form a first closed cross-section structure extending substantially vertically. A plate that is connected to the apron upper member and the spring support to form a second closed cross-section structure along the substantially vehicle width direction; and a third closed cross-section structure that is connected to the plate and the spring support. And connecting to the first closed cross-section structure and the second closed cross-section structure. A suspension upper arm support bracket connecting the front side member and the front side member in a closed cross-section structure, and the suspension upper arm support portion of the suspension upper arm support bracket is connected to the apron upper member and the apron upper member. It is characterized in that it is formed in a portion that is recessed into the closed cross-section structure that connects the front side member.

[Action]

In the present invention having the above structure, the suspension upper arm support bracket is connected to the spring support and the plate to form a third closed cross-section structure. The third closed cross-section structure is connected to the first closed cross-section structure formed by the spring support and the reinforce and connected to the front side member. Furthermore, the third closed cross-section structure is
It is connected to a second closed cross-section structure formed by a spring support and a plate and connected to an apron upper member. Therefore, the suspension upper arm support bracket is connected to the apron upper member and the front side member by the closed cross-section structure. Further, the suspension upper arm is supported by the suspension upper arm support portion formed in a portion recessed into the closed cross-section structure connecting the apron upper member and the front side member. Therefore, the supporting rigidity of the suspension upper arm can be improved, and the rigidity of the entire front body can be improved.

〔Example〕

An embodiment of a suspension upper arm mounting structure according to the present invention will be described with reference to FIGS.

In the figure, arrow FR indicates the vehicle front direction, arrow IN indicates the vehicle inner direction, and arrow UP indicates the vehicle upward direction.

As shown in FIGS. 1 and 2, an apron upper member is provided at the upper portions of both ends of the front body 10 of the vehicle body in the vehicle width direction.
12 are arranged substantially in the front-rear direction, and the apron upper member 12 has a closed sectional structure by an apron upper member upper 14 and an apron upper member lower 16. That is, this apron member member 14
The cross-sectional shape when viewed from the longitudinal direction is a U-shape with the opening facing downward, and a flange 14B is formed from the tip of the leg portion 14A on the outer side in the vehicle width direction toward the outer side in the vehicle width direction. ing. This flange 14B has an apron
An outer end portion 16A of the vehicle width direction 6 is welded from below. Further, the inner end in the vehicle width direction of the apron APA member lower 16 is bent downward at a substantially right angle to form a bent portion 16B.
The bent portion 16B is welded to the lower end of the leg portion 14C on the inner side in the vehicle width direction of the apron upper member upper 14 from the outer side in the vehicle width direction.

A front side member 18 is disposed below the apron upper member 12 in the vehicle width direction along the front-rear direction, and the front side member 18 is formed by a front side member inner 20 and a front side member outer 22. It has a closed cross-section structure. That is, as shown in FIG. 4, the cross-sectional shape of the front side member inner 20 when viewed from the longitudinal direction is a hat shape with the opening facing outward in the vehicle width direction, and the front and rear ends are arranged at the front and rear ends. An upper flange 20A and a lower flange 20B are formed along the direction. The upper flange 20A and the lower flange 20B are welded to the upper and lower end portions 22A and 22B of the front side member outer 22 from the inside in the vehicle width direction.

As shown in FIG. 4, a spring support is provided between the apron upper member 12 and the front side member 18.
24 are provided. The upper portion of the spring support 24 is curved outward in the vehicle width direction, and the tip portion 24A is inserted into the closed cross section of the apron upper member 12.
Also, part of the tip 24A is apron member member 1
It is welded from below to the center portion in the front-rear direction of a flange 26A formed toward the inside in the vehicle width direction at the end of a trapezoidal notch 26 formed from below in the leg portion 14C of the four. On the other hand, the lower end 24B of the spring support 24 is welded to the upper flange 22A of the front side member outer 22 from the outside in the vehicle width direction.

The front of the spring support 24, as shown in FIG.
24C and rear 24D are provided on the outer sides in the vehicle width direction of upper suspension arm support brackets 28 as suspension arm support arm support brackets, and these upper support arm brackets 28 are mounted on the suspension upper arm 27. It supports cylindrical upper ends 27A and 27B, which are bifurcated, respectively.

That is, the cross-sectional shape of the upper arm bracket 28 as viewed from above and below is a U-shape with the opening facing outward in the vehicle width direction, and the upper end of the suspension upper arm 27 is located in this U-shape. 27A and 27B are inserted respectively.

As shown in FIG. 4, the upper arm 28C and the lower flange 2 are provided on the upper and lower ends of the upper arm bracket 28, respectively.
It is said to be 8D. Further, as shown in FIG. 3, the contact piece 28 of the upper arm bracket 28 with the spring support 24 is contacted.
A and the central portion of the inner piece 28B facing the contact piece 28A,
Through holes 30 and 32 are provided respectively.

A plate 29 is welded to the upper part of the spring support 24 from the lower side. The front-rear center portion of the vehicle width direction outer side portion of the plate 29 is bulged upward to form a bulge portion 29A, and the vehicle width direction outer end portion of the bulge portion 29A is a flange 16D of the apron atpar lower 16. Is welded from below. The flange 16D is formed inward in the vehicle width direction at an upper end of a side piece 16C that is erected upward from the vehicle width direction inner end of the apron atpar lower 16.

Step portions 29B and 29C are formed on the front and rear sides of the bulging portion 29A toward the lower side, respectively. The vehicle width direction outer end portions 29D and 29E of these step portions 29B and 29C (see FIG. 4). ) Are welded to the flange 16E of the apron atsparoa 16 from below. This flange 16E is an apron atsparoa 16
Is formed from the inner end in the vehicle width direction toward the inside in the vehicle width direction.

As shown in FIG. 5, the front end portion of the step portion 29B of the plate 29 and the rear end portion of the step portion 29C of the plate 29 are bent downward at substantially right angles to form flanges 29F and 29G. These flanges 29F and 29G are welded to the front wall 24E and the rear wall 24F of the spring support 24, respectively.

Therefore, the spring support 24 and the plate 29 form second closed cross-section structures 42 and 44, which are substantially parallel to each other, in the vehicle width direction.

As shown in FIG. 4, the inner ends of the step portions 29B and 29C of the plate 29 in the vehicle width direction are bent downward, and are bent portions 29H and 29J, respectively. An upper flange 28C of the upper arm bracket 28 is welded to the bent portions 29H and 29J from the outside in the vehicle width direction.

Both front and rear wall surfaces of the center portion of the plate 29 in the front-rear direction are extended downward, and are formed as extension portions 29K and 29L, respectively. As shown in FIG. 3, these extended portions 29K, 29L
Respectively contact the inner piece 28B of the upper arm bracket 28, and through holes 33 and 34 are formed at positions corresponding to the through holes 32 of the inner piece 28B. Further, through holes 35 and 36 are formed in the front wall 24E and the rear wall 24F of the spring support 24. In these through holes, bolts 38 for supporting the upper ends 27A and 27B of the suspension upper arms 27 are provided from the plate 29 side to the spring support 24, respectively.
Are penetrated toward the front wall 24E and the rear wall 24F. Also,
Nuts 40 are respectively screwed into the bolts 38 from the spring support 24 side.

Therefore, the upper end 27 of the suspension upper arm 27
A and 27B are swingable around the bolt 38 in the clockwise direction of FIG. 4 (direction of arrow A in FIG. 4) and the counterclockwise direction of FIG. 4 (direction of arrow B in FIG. 4). There is.

As shown in FIG. 3, the upper arm bracket 28, the extending portions 29K and 29L of the plate 29, and the front portion 24C and the rear portion 24D of the spring support 24 cause the third closed cross-section structures 46 and 48 to move in the vertical direction. Are formed substantially parallel to each other.

An upper end portion 50D of the reinforce 50 is welded to the lower flange 28D of each upper arm bracket 28 from the inside in the vehicle width direction. These reinforces 50 are arranged substantially parallel to each other in the vertical direction.

As shown in FIG. 6, the cross-sectional shape of the reinforce 50 as viewed from above and below is a hat shape with the opening facing inward in the vehicle width direction, and the front and rear ends are respectively a front flange 50A and a rear flange 50B. It is said that. The front flange 50A and the rear flange 50B are welded to the front and rear end portions 24C and 24D of the spring support 24 from outside in the vehicle width direction. Also, as shown in FIG.
The lower part of 50 has a hat-shaped depth that gradually decreases, and the lower end 50C is plate-shaped. This lower end 50C is
Each is welded to the front side member outer 22 from the outside in the vehicle width direction.

Therefore, by the reinforce 50 and the front and rear end portions 24C and 24D of the spring support 24, the first closed sectional structure 52,
54 are formed substantially parallel to each other in the vertical direction.

In addition, these first closed cross-section structures 52 and 54 are formed by the third closed cross-section structures 46 and 48, respectively.
It is connected to. That is, the apron atup member 12
The front side member 18 and the front side member 18 are connected by a closed cross-section structure.

As shown in FIG. 4, the cross-sectional shape of the suspension upper arm supporting portion between the upper flange 28C and the lower flange 28D of the upper arm bracket 28 as viewed from the front and rear is the apron upper member 12 and the front side. It has a U-shape that is recessed in the closed cross-section structures 42, 46, 52 and 44, 48, 54 that connect to the member 18, and the suspension upper arm is supported in the suspension upper arm support portion.
Upper ends 27B and 27A of 27 are swingably supported by bolts 38, respectively.

As shown in FIG. 2, a flange 24G is formed toward the front side at the front end of the spring support 24,
This flange 24G includes a rear end 56A of the wheel apron 56.
Is welded from the inside in the vehicle width direction. A flange 56B is formed on the upper end of the wheel apron 56 toward the upper side, and the flange 56B is formed on the apron upper member 1.
It is welded to the flange 16B of 6 from the inside in the vehicle width direction. A lower end portion 56C of the wheel apron 56 is welded to the upper flange 22A of the front side member outer 22 from the outside in the vehicle width direction.

 Next, the operation of this embodiment will be described.

In this embodiment having the above-described structure, as shown in FIG. 3, the upper arm bracket 28 supporting the suspension upper arm 27 includes a spring support 24 and a plate 29.
To form a third closed cross-section structure 46, 48. Also, as shown in FIG. 4, these third closed cross-section structures
46, 48 are connected to the apron upper member 12 by a second closed cross-section structure 42, 44 formed by the spring support 24 and the plate 29. Furthermore, the third closed cross-section structure
46, 48 are connected to the front side member 18 by a first closed cross-section structure 52, 54 constituted by a spring support 24 and a reinforce 50. Therefore, the upper arm bracket 28 is connected to the upper arm 12 and the front side member 18 in a closed sectional structure.

In addition, the cross-sectional shape of the suspension arm arm support portion of the upper arm bracket 28 as viewed from the front-rear direction is a closed cross-section structure 42, 46, 52 and 44 for connecting the apron upper member 12 and the front side member 18. It has a U-shape that is recessed in each of 48 and 54. Suspension upper arm 27
The upper ends 27B and 27A of the are respectively swingably supported by bolts 38.

Therefore, the supporting rigidity of the suspension upper arm 27 can be improved, and the rigidity of the entire front body 10 can be improved.

[Effect of device]

Since the present invention is configured as described above, it has an excellent effect that it is possible to improve the support rigidity of the suspension upper arm and the rigidity of the entire front body.

[Brief description of drawings]

FIG. 1 is a perspective view of a suspension upper arm mounting structure according to the present invention seen obliquely from the inside of the vehicle, FIG. 2 is an exploded perspective view of FIG. 1, and FIG. 3 is a III-III line of FIG. Sectional view, FIG. 4 is a sectional view taken along line IV-IV in FIG. 3, and FIG. 5 is FIG.
V line cross section, FIG. 6 is a VI-VI line cross section of FIG. 4, FIG. 7 is a perspective view showing a conventional suspension upper arm mounting structure as seen from diagonally front of the vehicle, and FIG. FIG. 10 is a perspective view of a conventional suspension upper arm attachment structure as seen from diagonally front of the inside of the vehicle. 10 …… Front body, 12 …… Apron Atpa member,
18 …… Front side member, 24 …… Spring support, 28 …… Upper arm bracket, 29 …… Plate,
42, 44 ... Second closed cross section structure, 46, 48 ... Third closed cross section structure, 50 ... Reinforce, 52, 54 ... First closed cross section structure.

Claims (1)

(57) [Scope of utility model registration request] 1. An apron upper member which is arranged substantially at both upper ends of a front body of a vehicle body in the vehicle width direction, and an apron upper member which is arranged substantially in the front and rear direction below the inside of the apron upper member in the vehicle width direction. Front sud member, a spring support coupled to the front sud member and the apron upper member, and a first closed cross-section structure coupled to the spring support and the front side member and extending substantially vertically. A plate that forms a second closed cross-section structure that is connected to the apron upper member and the spring support and that forms a second closed cross-section structure that is substantially along the vehicle width direction; and a plate that is connected to the plate and the spring support. And a second closed cross-section structure that is connected to the first closed cross-section structure and the second closed cross-section structure. A suspension upper arm support bracket for connecting the upper member and the front side member in a closed cross-section structure, wherein the suspension upper arm support portion of the suspension upper arm support bracket is connected to the apron upper member and the apron upper member. A suspension upper arm attachment structure, characterized in that it is formed in a portion that is recessed into a closed cross-section structure that connects with a front side member.